【计算机类职业资格】键盘与鼠标事件过程及答案解析.doc

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1、键盘与鼠标事件过程及答案解析(总分:44.00,做题时间:90 分钟)一、B选择题/B(总题数:17,分数:34.00)1.以下叙述中错误的是_ 。(分数:2.00)A.双击鼠标可以触发 DblClick 事件B.事件的名称可以由编程人员确定C.移动鼠标时,会触发 MoussMove 事件D.控件的名称可以由编程人员设定2.下列与拖放操作无关的是_ 。(分数:2.00)A.KeyPress 事件B.Drag 方法C.DragOver 事件D.DragDrop 事件3.编写如下事件过程; Private Sub Form_ MouseDown (Button As Integer, Shift

2、As Integer, X As Single, Y As Single) If Shift = 6 And Button = 1 Then Print “BBBB“ End If End Sub 程序运行后,为了在窗体上输出 “BBBB”,应执行的操作为_ 。(分数:2.00)A.同时按下 Shift 键和鼠标左键B.同时 Ctrl、Alt 键和鼠标左键C.同时按下 Shift 键和鼠标右键D.同时按下 Ctrl、Alt 键和鼠标左键4.以下说法中正确的是_ 。(分数:2.00)A.当 MousePointer 属性为 1 时,将把鼠标的形状设置为 Windows 的默认值B.MouseIc

3、on 属性的设置要受到 KeyDown 事件的影响C.自定义鼠标光标通过 MouseIcon 属性设置D.为了定义用户自己的鼠标光标,必须把 MousePointer 属性设置为 995.拖放要触发两个事件,这两个事件是_ 。(分数:2.00)A.Dragover 事件和 DragDrop 事件B.Drag 事件和 DragDrop 事件C.MouseDown 事件和 KeyDown 事件D.MouseUp 事件和 KeyUp 事件6.下列与改变鼠标光标形状有关的是_ 。(分数:2.00)A.MouseMove 事件B.MouseDown 事件C.MousePointer 属性D.MouseU

4、p 事件7.设有如下程序; Private Sub Form_ Load() Show Text1.Text = “ “ Text1.SetFocus End Sub Private Sub Form_ MouseUp (Button As Integer, Shift As Integer, X As Single, Y As Single) Print “程序设计” End Sub Private Sub Text1_ KeyDown (KeyCode As Integer, Shift As Integer) Print “Visual Basic“ End Sub 程序运行后,如果在文

5、本框中输入字母 a(即直接按 a 键),然后单击窗体,则在窗体上显示的内容是_ 。(分数:2.00)A.Visual BasicB.程序设计C.Visual Basic 程序设计D.A 程序设计8.以下叙述中错误的是_ 。(分数:2.00)A.在 KeyUp 和 KeyDown 事件过程中,从键盘上输入的 A 和 a 被视作相同的字母(具有相同的 KeyCodB.在 KeyUp 和 KeyDown 事件过程中,将键盘上的 1 和右侧小键盘上的“1”视作不同的数字(具有不同的KeyCodC.KeyPress 事件中不能识别键盘上键的按下与释放D.KeyPress 不能识别回车键9.在窗体上画一个

6、名为 Command1 的命令按钮和一个名为 Text1 的文本框,并把窗体的 KeyPreview 属性设置为 True,然后编写如下代码: Dim SaveAll As String Private Sub Form_ Load () Show Text1.Text = “ “ Text1. SetFocus End Sub Private Sub Command1 Click() Text1. Text= LCase(SaveAll) End Sub Private Sub Form_ KeyPress (KeyAscii As Integer) SaveAll = SaveAll +

7、Chr(KeyAscii) End Sub 程序运行后,在键盘上输入 ABCDEFG,单击命令按钮,则文本框中显示的内容为 _ 。(分数:2.00)A.abodefgB.不显示任何信息C.ABCDEFGD.出错10.编写如下事件过程: Private Sub FOrm_ MouseDown (Button As Integer, Shift As Integer, X As Single, Y As Single) If Button = 2 Then Pint “AAAA“ Then End If End Sub Private Sub Form_ MouseUp (Button As In

8、teger, _ Shift As Integer, X As Single, Y As Single) Print “BBBB“ End Sub 程序运行后,如果在窗体上单击鼠标右键,则输出结果为_ 。(分数:2.00)A.AAAA BBBBB.BBBBC.AAAAD.BBBB AAAA11.在窗体上画一个名称为 Text1 的文本框,要求文本框只能接收大写字母的输入。以下能够正确实现该操作的事件过程是_ 。(分数:2.00)A.Private Sub Text1_ KeyPress (KeyAscii As Intege IfKeyAscii 65 Or KeyAscii 9t Then

9、MsgBox “请输入大写字母” End If End subB.Private Sub Text1_ KeyDown (KeyCode As Integer, Shift As Intege IfKeyCode 65 Or KeyCode 91 Then MsgBox “请输入大写字母” End If End subC.Private Sub Text1_ MouseDown (Button As Integer, _ Shift As Integer, X As Single, YAs Singl IfAsc (Text1.Tex 65 Or Asc (Text1. Tex 91 Then

10、 MsgBox “请输入大写字母” End If End subD.Private Sub Text1_ Change() IfAsc(Text 1.Tex 65 Or Asc(Text1. Tex 91 Then MsgBox “请输入大写字母” End If End sub12.假定编写了如下事件过程: Private Sub Form MouseDown (Button As Integer, _ Shift As Integer, X As Single, Y As Single) If Button And 2 Then Print “AAAA“ End If End Sub 程序运

11、行后,为了在窗体上输出 AAAA,应按下的鼠标键为_ 。(分数:2.00)A.左B.右C.同时按下左、右D.按什么键都不显示13.窗体上画一个名称为 Text1 的文本框,然后编写如下事件过程: Private Sub Form Load() Show Text1. SetFocus End Sub Private Sub Text1_ KeyPress (KeyAscii As Integer) Dim ch As String ch = Chr (KeyAscii) KeyAscii = Asc(UCase(ch) Pint Chr(KeyAscii + 4) End Sub 程序运行后,

12、在文本框中输入 abcde,则在窗体上显示的内容是_ 。(分数:2.00)A.abcdeB.efghiC.EFGHID.ABCDE14.以下叙述中正确的是_ 。(分数:2.00)A.KeyAscii 参数返回所按键的 ASCII 码B.KeyAscii 参数的数据类型为字符串C.KeyAscii 参数与 KeyCode 参数的返回值相同D.在 KeyPress 事件过程中,KeyAscii 参数可以省略15.在窗体上画一个名称为 Text1 的文本框,然后编写如下事件过程: Private Sub Text1_ KeyPress (KeyAscii As Integer) Dim ch As

13、String ch = Chr (KeyAscii) KeyAscii = Asc (UCase(ch) Text1. Text = String(1, KeyAscii) End Sub 程序运行后,使文本框拥有焦点,然后按键盘上的 B 键,则在文本框中显示的内容是 _ 。(分数:2.00)A.bB.bbC.BBD.B16.编写如下事件过程: Private Sub Form_ MouseDown (Button As Integer, _ Shift As Integer, X As Single, Y As Single) If Shift = 6 And Button = 2 Then

14、 Print “BBBB“ End If End Sub 程序运行后,为了在窗体上输出 BBBB,应执行的操作为_ 。(分数:2.00)A.同时按下 Shift 键和鼠标左键B.同时按下 Ctrl、Alt 键和鼠标右键C.同时按下 Shift 键和鼠标右键D.同时按下 Ctrl、Alt 键和鼠标左键17.在 KeyUp 事件过程中,通过 KeyCode 参数判断用户的按键。假定键“B”的 KeyCode 值为 66,则以下正确的说法是_ 。(分数:2.00)A.按 Shift+ B 键后的 KeyCode 值为 66+1B.按 Shift+ B、Ctrl+ B、Alt+ B 键后的 KeyCo

15、de 值均为 66C.按 Ctrl+ B 键后的 KeyCode 值为 66+2D.按 Alt+ B 键后的 KeyCode 值为 66+4二、B填空题/B(总题数:5,分数:10.00)18.对窗体编写如下两个事件过程: Private Sub Form_ KeyDown (KeyCode As Integer, Shift As Integer) Print Chr (KeyCode) End Sub Private Sub Form_ KeyPress (KeyAscii As Integer) Print Chr (KeyAscii) End Sub 程序运行后,如果直接按键盘上的 a

16、 键(即不按住 shift 键),则在窗体上输出的字符分别为_ 和_ 。(分数:2.00)填空项 1:_19.编写如下代码: Dim Flag As Boolean Private Sub Form MouseDown (Button As Integer, Shift As Integer, X As Single, Y As Single) Flag = True End Sub Private Sub Form MouseMove (Button As Integer, Shift As Integer, X As Single, Y As Single) Flag = False En

17、d Sub Private Sub Form_ MouseUp (Button As Integer, Shift As Integer, X As Single, Y As Single) If Flag = False Then Print “DDDD“ End If End Sub 程序运行后,如果想在窗体上输出 DDDD,则应执行的操作为_ 。(分数:2.00)填空项 1:_20.假定编写了如下事件过程: Private Sub Form MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single) I

18、f (Button And 3) = 3 Print “AAAA“ End If End Sub 程序运行后,为了在窗体上输出 AAAA,应执行的操作是_ 。(分数:2.00)填空项 1:_21.在窗体上画两个文本框,其名称分别为 Text1 和 Text2,然后编写如下事件过程: Private Sub Form_ Lead() Show Text1.Text = “ “ Text2.Text = “ “ Text2.SetFocus End Sub Private Sub Text2_ KeyDown (KeyCode As Integer, Shift As Integer) Text1

19、Text = Text1.Text + Chr (KeyCode - 4) End Sub 程序运行后,如果在 Text2 文本框中输入 efghi,则 Text1 文本框中的内容是_。(分数:2.00)填空项 1:_22.阅读程序; Option Base 1 Private Sub Form_ KeyPress (KeyAscii As Integer) art = Array(268, 542, 693, 365, 489, 147, 852) a1 = arr(1) a2 = 1 If KeyAscii = 13 Then For a = 2 To 6 If arr(i) a1 Th

20、en a1 = arr(i) a2 = i End If Next i End If Print a1; a2 End Sub 程序运行后,按回车键;输出结果是_。(分数:2.00)填空项 1:_键盘与鼠标事件过程答案解析(总分:44.00,做题时间:90 分钟)一、B选择题/B(总题数:17,分数:34.00)1.以下叙述中错误的是_ 。(分数:2.00)A.双击鼠标可以触发 DblClick 事件B.事件的名称可以由编程人员确定 C.移动鼠标时,会触发 MoussMove 事件D.控件的名称可以由编程人员设定解析:2.下列与拖放操作无关的是_ 。(分数:2.00)A.KeyPress 事件

21、 B.Drag 方法C.DragOver 事件D.DragDrop 事件解析:3.编写如下事件过程; Private Sub Form_ MouseDown (Button As Integer, Shift As Integer, X As Single, Y As Single) If Shift = 6 And Button = 1 Then Print “BBBB“ End If End Sub 程序运行后,为了在窗体上输出 “BBBB”,应执行的操作为_ 。(分数:2.00)A.同时按下 Shift 键和鼠标左键B.同时 Ctrl、Alt 键和鼠标左键 C.同时按下 Shift 键和

22、鼠标右键D.同时按下 Ctrl、Alt 键和鼠标左键解析:4.以下说法中正确的是_ 。(分数:2.00)A.当 MousePointer 属性为 1 时,将把鼠标的形状设置为 Windows 的默认值B.MouseIcon 属性的设置要受到 KeyDown 事件的影响C.自定义鼠标光标通过 MouseIcon 属性设置D.为了定义用户自己的鼠标光标,必须把 MousePointer 属性设置为 99 解析:5.拖放要触发两个事件,这两个事件是_ 。(分数:2.00)A.Dragover 事件和 DragDrop 事件 B.Drag 事件和 DragDrop 事件C.MouseDown 事件和

23、KeyDown 事件D.MouseUp 事件和 KeyUp 事件解析:6.下列与改变鼠标光标形状有关的是_ 。(分数:2.00)A.MouseMove 事件B.MouseDown 事件C.MousePointer 属性 D.MouseUp 事件解析:7.设有如下程序; Private Sub Form_ Load() Show Text1.Text = “ “ Text1.SetFocus End Sub Private Sub Form_ MouseUp (Button As Integer, Shift As Integer, X As Single, Y As Single) Print

24、 “程序设计” End Sub Private Sub Text1_ KeyDown (KeyCode As Integer, Shift As Integer) Print “Visual Basic“ End Sub 程序运行后,如果在文本框中输入字母 a(即直接按 a 键),然后单击窗体,则在窗体上显示的内容是_ 。(分数:2.00)A.Visual BasicB.程序设计C.Visual Basic 程序设计 D.A 程序设计解析:8.以下叙述中错误的是_ 。(分数:2.00)A.在 KeyUp 和 KeyDown 事件过程中,从键盘上输入的 A 和 a 被视作相同的字母(具有相同的

25、KeyCodB.在 KeyUp 和 KeyDown 事件过程中,将键盘上的 1 和右侧小键盘上的“1”视作不同的数字(具有不同的KeyCodC.KeyPress 事件中不能识别键盘上键的按下与释放D.KeyPress 不能识别回车键 解析:9.在窗体上画一个名为 Command1 的命令按钮和一个名为 Text1 的文本框,并把窗体的 KeyPreview 属性设置为 True,然后编写如下代码: Dim SaveAll As String Private Sub Form_ Load () Show Text1.Text = “ “ Text1. SetFocus End Sub Priva

26、te Sub Command1 Click() Text1. Text= LCase(SaveAll) End Sub Private Sub Form_ KeyPress (KeyAscii As Integer) SaveAll = SaveAll + Chr(KeyAscii) End Sub 程序运行后,在键盘上输入 ABCDEFG,单击命令按钮,则文本框中显示的内容为 _ 。(分数:2.00)A.abodefgB.不显示任何信息 C.ABCDEFGD.出错解析:10.编写如下事件过程: Private Sub FOrm_ MouseDown (Button As Integer, S

27、hift As Integer, X As Single, Y As Single) If Button = 2 Then Pint “AAAA“ Then End If End Sub Private Sub Form_ MouseUp (Button As Integer, _ Shift As Integer, X As Single, Y As Single) Print “BBBB“ End Sub 程序运行后,如果在窗体上单击鼠标右键,则输出结果为_ 。(分数:2.00)A.AAAA BBBB B.BBBBC.AAAAD.BBBB AAAA解析:11.在窗体上画一个名称为 Text

28、1 的文本框,要求文本框只能接收大写字母的输入。以下能够正确实现该操作的事件过程是_ 。(分数:2.00)A.Private Sub Text1_ KeyPress (KeyAscii As Intege IfKeyAscii 65 Or KeyAscii 9t Then MsgBox “请输入大写字母” End If End sub B.Private Sub Text1_ KeyDown (KeyCode As Integer, Shift As Intege IfKeyCode 65 Or KeyCode 91 Then MsgBox “请输入大写字母” End If End subC.

29、Private Sub Text1_ MouseDown (Button As Integer, _ Shift As Integer, X As Single, YAs Singl IfAsc (Text1.Tex 65 Or Asc (Text1. Tex 91 Then MsgBox “请输入大写字母” End If End subD.Private Sub Text1_ Change() IfAsc(Text 1.Tex 65 Or Asc(Text1. Tex 91 Then MsgBox “请输入大写字母” End If End sub解析:12.假定编写了如下事件过程: Priv

30、ate Sub Form MouseDown (Button As Integer, _ Shift As Integer, X As Single, Y As Single) If Button And 2 Then Print “AAAA“ End If End Sub 程序运行后,为了在窗体上输出 AAAA,应按下的鼠标键为_ 。(分数:2.00)A.左B.右 C.同时按下左、右D.按什么键都不显示解析:13.窗体上画一个名称为 Text1 的文本框,然后编写如下事件过程: Private Sub Form Load() Show Text1. SetFocus End Sub Priv

31、ate Sub Text1_ KeyPress (KeyAscii As Integer) Dim ch As String ch = Chr (KeyAscii) KeyAscii = Asc(UCase(ch) Pint Chr(KeyAscii + 4) End Sub 程序运行后,在文本框中输入 abcde,则在窗体上显示的内容是_ 。(分数:2.00)A.abcdeB.efghiC.EFGHI D.ABCDE解析:14.以下叙述中正确的是_ 。(分数:2.00)A.KeyAscii 参数返回所按键的 ASCII 码 B.KeyAscii 参数的数据类型为字符串C.KeyAscii 参

32、数与 KeyCode 参数的返回值相同D.在 KeyPress 事件过程中,KeyAscii 参数可以省略解析:15.在窗体上画一个名称为 Text1 的文本框,然后编写如下事件过程: Private Sub Text1_ KeyPress (KeyAscii As Integer) Dim ch As String ch = Chr (KeyAscii) KeyAscii = Asc (UCase(ch) Text1. Text = String(1, KeyAscii) End Sub 程序运行后,使文本框拥有焦点,然后按键盘上的 B 键,则在文本框中显示的内容是 _ 。(分数:2.00)

33、A.bB.bbC.BB D.B解析:16.编写如下事件过程: Private Sub Form_ MouseDown (Button As Integer, _ Shift As Integer, X As Single, Y As Single) If Shift = 6 And Button = 2 Then Print “BBBB“ End If End Sub 程序运行后,为了在窗体上输出 BBBB,应执行的操作为_ 。(分数:2.00)A.同时按下 Shift 键和鼠标左键B.同时按下 Ctrl、Alt 键和鼠标右键 C.同时按下 Shift 键和鼠标右键D.同时按下 Ctrl、Al

34、t 键和鼠标左键解析:17.在 KeyUp 事件过程中,通过 KeyCode 参数判断用户的按键。假定键“B”的 KeyCode 值为 66,则以下正确的说法是_ 。(分数:2.00)A.按 Shift+ B 键后的 KeyCode 值为 66+1B.按 Shift+ B、Ctrl+ B、Alt+ B 键后的 KeyCode 值均为 66 C.按 Ctrl+ B 键后的 KeyCode 值为 66+2D.按 Alt+ B 键后的 KeyCode 值为 66+4解析:二、B填空题/B(总题数:5,分数:10.00)18.对窗体编写如下两个事件过程: Private Sub Form_ KeyDo

35、wn (KeyCode As Integer, Shift As Integer) Print Chr (KeyCode) End Sub Private Sub Form_ KeyPress (KeyAscii As Integer) Print Chr (KeyAscii) End Sub 程序运行后,如果直接按键盘上的 a 键(即不按住 shift 键),则在窗体上输出的字符分别为_ 和_ 。(分数:2.00)填空项 1:_ (正确答案:A a)解析:19.编写如下代码: Dim Flag As Boolean Private Sub Form MouseDown (Button As

36、Integer, Shift As Integer, X As Single, Y As Single) Flag = True End Sub Private Sub Form MouseMove (Button As Integer, Shift As Integer, X As Single, Y As Single) Flag = False End Sub Private Sub Form_ MouseUp (Button As Integer, Shift As Integer, X As Single, Y As Single) If Flag = False Then Prin

37、t “DDDD“ End If End Sub 程序运行后,如果想在窗体上输出 DDDD,则应执行的操作为_ 。(分数:2.00)填空项 1:_ (正确答案:按下鼠标左键或右键同时松开)解析:20.假定编写了如下事件过程: Private Sub Form MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single) If (Button And 3) = 3 Print “AAAA“ End If End Sub 程序运行后,为了在窗体上输出 AAAA,应执行的操作是_ 。(分数:2.00)填空项 1:_ (

38、正确答案:把鼠标光标移到窗体上,然后同时按住鼠标左键、右键,并移动鼠标)解析:21.在窗体上画两个文本框,其名称分别为 Text1 和 Text2,然后编写如下事件过程: Private Sub Form_ Lead() Show Text1.Text = “ “ Text2.Text = “ “ Text2.SetFocus End Sub Private Sub Text2_ KeyDown (KeyCode As Integer, Shift As Integer) Text1.Text = Text1.Text + Chr (KeyCode - 4) End Sub 程序运行后,如果在

39、 Text2 文本框中输入 efghi,则 Text1 文本框中的内容是_。(分数:2.00)填空项 1:_ (正确答案:ABCDE)解析:22.阅读程序; Option Base 1 Private Sub Form_ KeyPress (KeyAscii As Integer) art = Array(268, 542, 693, 365, 489, 147, 852) a1 = arr(1) a2 = 1 If KeyAscii = 13 Then For a = 2 To 6 If arr(i) a1 Then a1 = arr(i) a2 = i End If Next i End If Print a1; a2 End Sub 程序运行后,按回车键;输出结果是_。(分数:2.00)填空项 1:_ (正确答案:693 3)解析:

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